Questions and Answers
What is distance measured in?
Why do miles make sense on larger scales?
What is the relationship between distance and change in position?
What does speed measure?
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What can you do with distance?
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What does a speed of 50 miles per hour mean?
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Why is it more useful to calculate average speed when your speed is changing constantly?
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What is the unit of time usually used to measure speed?
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A car travels 75 miles in 3 hours. What is the average speed of the car?
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A girl travels 10 miles in 2 hours and then travels 5 miles in 1 hour. What is her average speed?
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Study Notes
What is Distance?
- Distance is the amount of space between two things or people, or the amount something has moved, measured as a continuous line.
- Units of measurement for distance include miles, kilometers, meters, centimeters, inches, and yards.
- The choice of unit depends on the context, with miles suitable for larger scales and centimeters for smaller scales.
Distance vs. Change in Position
- Distance traveled is related to a change in position, but they are not the same thing.
- Change in position is the difference in where you are at two different times, while distance is the amount of space you've moved, regardless of direction.
Calculating Average Speed
- Speed is the rate at which distance changes, measured in meters per second or miles per hour.
- Average speed is calculated using the equation: average speed = total distance / total time.
- The equation can be used to find average speed in various situations, such as calculating the average speed of a car or a bicycle.
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Description
Learn about the concept of distance, its measurement units, and when to use them. Discover how to calculate distance and appreciate its importance.